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Randomly generate spheres

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This commit is contained in:
Sascha Willems 2023-05-13 16:19:40 +02:00
parent c9aa0cb13e
commit c01136f4bd
1 changed files with 23 additions and 7 deletions
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30
examples/raytracingintersection/raytracingintersection.cpp
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@ -61,7 +61,7 @@ public:
camera.type = Camera::CameraType::lookat;
camera.setPerspective(60.0f, (float)width / (float)height, 0.1f, 512.0f);
camera.setRotation(glm::vec3(0.0f, 0.0f, 0.0f));
camera.setTranslation(glm::vec3(0.0f, 0.0f, -10.0f));
camera.setTranslation(glm::vec3(0.0f, 0.0f, -60.0f));
enableExtensions();
}
@ -83,10 +83,28 @@ public:
{
// We'll be using two buffers to describe the procedural geometry
// A buffer with sphere descriptions (center, radius, material) that'll be passed to the ray tracing shaders as a shader storage buffer object
// A buffer with randpmly generatd sphere descriptions (center, radius, material) that'll be passed to the ray tracing shaders as a shader storage buffer object
std::vector<Sphere> spheres{};
spheres.push_back({ glm::vec3(0.0f), 2.5f, glm::vec4(1.0f, 0.0f, 0.0f, 1.0f) });
spheres.push_back({ glm::vec3(2.0f), 1.5f, glm::vec4(1.0f, 1.0f, 0.0f, 1.0f) });
std::default_random_engine rndGenerator(benchmark.active ? 0 : (unsigned)time(nullptr));
std::uniform_real_distribution<float> uniformDist(0.0, 1.0);
std::uniform_real_distribution<float> sizeDist(1.0, 2.0);
for (uint32_t i = 0; i < 1024; i++) {
Sphere sphere{};
//sphere.center =
sphere.radius = sizeDist(rndGenerator);
sphere.color = glm::vec4(uniformDist(rndGenerator), uniformDist(rndGenerator), uniformDist(rndGenerator), 1.0f);
// Get a random point in a sphere
float x,y,z,d{ 0.0f };
do {
x = uniformDist(rndGenerator) * 2.0f - 1.0f;
y = uniformDist(rndGenerator) * 2.0f - 1.0f;
z = uniformDist(rndGenerator) * 2.0f - 1.0f;
d = x * x + y * y + z * z;
} while (d > 1.0);
sphere.center = glm::vec3(x, y, z) * 25.0f;
spheres.push_back(sphere);
}
// A buffer with the (axis aligned) bounding boxes of our sphere, which is used during the ray tracing traversal for hit detection
std::vector<AABB> aabbs{};
@ -540,9 +558,7 @@ public:
{
uniformData.projInverse = glm::inverse(camera.matrices.perspective);
uniformData.viewInverse = glm::inverse(camera.matrices.view);
uniformData.lightPos = glm::vec4(cos(glm::radians(timer * 360.0f)) * 40.0f, -50.0f + sin(glm::radians(timer * 360.0f)) * 20.0f, 25.0f + sin(glm::radians(timer * 360.0f)) * 5.0f, 0.0f);
// Pass the vertex size to the shader for unpacking vertices
//uniformData.vertexSize = sizeof(vkglTF::Vertex);
uniformData.lightPos = glm::vec4(cos(glm::radians(timer * 360.0f)) * 60.0f, 0.0f, 25.0f + sin(glm::radians(timer * 360.0f)) * 60.0f, 0.0f);
memcpy(ubo.mapped, &uniformData, sizeof(uniformData));
}